🅰️ Alpha Radiation (α)
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Alpha radiation consists of helium nuclei (two protons and two neutrons) that are emitted during the decay of certain unstable atomic nuclei.
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- Range: Alpha particles travel only a few centimeters in air.
- Penetration: Very low, alpha radiation is stopped by a sheet of paper or the outer layer of skin.
- Hazards: Outside the body, alpha radiation is considered not very dangerous. Inside the body – for example, after inhalation or ingestion* – it is very dangerous, since it can directly damage cells.
- Safety Measures:
- When handling alpha emitters, always use gloves, lab coats, and possibly respiratory protection.
- Avoid dust and ensure good room ventilation.
- Shielding with paper, plexiglass or lightweight foil is usually sufficient.
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⚙ alpha